Respuesta :

Answer:

a₆ = 21875

Step-by-step explanation:

Using the recursive rule and a₁ = 7 , then

a₂ = 5a₁ = 5 × 7 = 35

a₃ - 5a₂ = 5 × 35 = 175

a₄ = 5a₃ = 5 × 175 = 875

a₅ = 5a₄ = 5 × 875 = 4375

a₆ = 5a₅ = 5 × 4375 = 21875

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